Moved Galley 1 to new server, installed newest G1, now getting blank pages

Required Info
Get this information from the PHP diagnostic (in the configuration wizard).
Gallery URL (optional but very useful): http://stde.ca/gallery
Gallery version: 1.6-RC3
Apache version: Apache/2.2.9 (Ubuntu)
PHP version (don't just say PHP 4, please): PHP/5.2.6-2ubuntu4.1 with Suhosin-Patch
Graphics Toolkit: ImageMagick 6.3.7
Operating system: Ubuntu 8.10 Server
Web browser/version (if applicable): Firefox 3.06

Also, a link to phpinfo if it helps: http://stde.ca/serverinfo/phpinfo.php

Hello everyone.

Just moved my albums folder to a new server and installed the newest G1 (1.6-RC3), following the instructions here:
- http://codex.gallery2.org/Gallery1:Migrating_Gallery
- and also here: http://codex.gallery2.org/Gallery1:Installation_on_a_Unix/Linux_Server_with_Shell_Access

Followed everything to the letter. Even re-did it twice. The albums folder was properly upgraded according to the configuration wizard.
This is a dedicated machine, with shell access so I am able to set permissions and configure everything freely.

When running the "Gallery 1 Configuration Wizard", everything was green except 2 of the "nice to have" items in the list:
- Jhead installed? --> warning: Can't find jhead.
- jpegtran installed? --> jpegtran was not found.

PROBLEM:
- After installation, when I go to http://stde.ca/gallery (or even http://stde.ca/gallery/albums.php explicitly), I get a blank page.
- When I go to http://stde.ca/gallery/login.php , I see the correct login form/page but when I login with admin/password, I get a blank page again immediately after that.

Not getting any 404 errors or other errors, just a blank page.
Ran all the tests on the Gallery Diagnostics page and all seems well.

Very odd.
Any ideas?

Thanks in advance for any help and suggestions.

Darren